{
  "AWSTemplateFormatVersion": "2010-09-09",
  "Description": "AWS CloudFormation Custom::Variable demo stack",
  "Parameters": {
    "VariableCustomResourceName": {
      "Type": "String",
      "Default": "cfn-variable-0-2-0",
      "Description": "The name of the Variable Custom Resource Lambda you deployed to test this stack."
    },
    "RestApiCustomResourceName": {
      "Type": "String",
      "Default": "cfn-api-gateway-restapi-0-5-0",
      "Description": "The name of the RestApi Custom Resource Lambda you deployed to test this stack."
    },
    "ResourceTreeCustomResourceName": {
      "Type": "String",
      "Default": "cfn-api-gateway-resource-tree-0-2-0",
      "Description": "The name of the ResourceTree Custom Resource Lambda you deployed to test this stack."
    },
    "aNameForNestedApi": {
      "Type": "String",
      "Default": "CfnVariableDemoApi",
      "Description": "The name of the RestApi to build for this demo."
    }
  },
  "Resources": {
    "ExpandedResourceTree": {
      "DependsOn": [
        "MyRestApi",
        "MyVariable"
      ],
      "Type": "Custom::ApiGatewayResourceTree",
      "Properties": {
        "ServiceToken": {
          "Fn::Join": [
            ":",
            [
              "arn",
              "aws",
              "lambda",
              {
                "Ref": "AWS::Region"
              },
              {
                "Ref": "AWS::AccountId"
              },
              "function",
              {
                "Ref": "ResourceTreeCustomResourceName"
              }
            ]
          ]
        },
        "RestApiId": {
          "Ref": "MyRestApi"
        },
        "ParentId": {
          "Fn::GetAtt": [
            "MyRestApi",
            "RootResourceId"
          ]
        },
        "ChildResources": [
          {
            "PathPart": "alpha",
            "__default__": {
              "Fn::GetAtt": [
                "MyVariable",
                "Value"
              ]
            }
          },
          {
            "PathPart": "beta",
            "__default__": {
              "Fn::GetAtt": [
                "MyVariable",
                "Value"
              ]
            }
          },
          {
            "PathPart": "gamma",
            "__default__": {
              "Fn::GetAtt": [
                "MyVariable",
                "Value"
              ]
            }
          }
        ]
      }
    },
    "MyRestApi": {
      "Type": "Custom::ApiGatewayRestApi",
      "Properties": {
        "ServiceToken": {
          "Fn::Join": [
            ":",
            [
              "arn",
              "aws",
              "lambda",
              {
                "Ref": "AWS::Region"
              },
              {
                "Ref": "AWS::AccountId"
              },
              "function",
              {
                "Ref": "RestApiCustomResourceName"
              }
            ]
          ]
        },
        "Name": {
          "Ref": "aNameForNestedApi"
        }
      }
    },
    "MyVariable": {
      "Type": "Custom::Variable",
      "Properties": {
        "ServiceToken": {
          "Fn::Join": [
            ":",
            [
              "arn",
              "aws",
              "lambda",
              {
                "Ref": "AWS::Region"
              },
              {
                "Ref": "AWS::AccountId"
              },
              "function",
              {
                "Ref": "VariableCustomResourceName"
              }
            ]
          ]
        },
        "VariableValue": {
          "ChildResources": [
            {
              "PathPart": "a",
              "ChildResources": [
                {
                  "PathPart": "aa",
                  "ChildResources": [
                    {
                      "PathPart": "aaa"
                    },
                    {
                      "PathPart": "aab"
                    },
                    {
                      "PathPart": "aac"
                    }
                  ]
                },
                {
                  "PathPart": "ab",
                  "ChildResources": [
                    {
                      "PathPart": "aba"
                    },
                    {
                      "PathPart": "abb"
                    },
                    {
                      "PathPart": "abc"
                    }
                  ]
                },
                {
                  "PathPart": "ac",
                  "ChildResources": [
                    {
                      "PathPart": "aca"
                    },
                    {
                      "PathPart": "acb"
                    },
                    {
                      "PathPart": "acc"
                    }
                  ]
                }
              ]
            },
            {
              "PathPart": "b",
              "ChildResources": [
                {
                  "PathPart": "ba",
                  "ChildResources": [
                    {
                      "PathPart": "baa"
                    },
                    {
                      "PathPart": "bab"
                    },
                    {
                      "PathPart": "bac"
                    }
                  ]
                },
                {
                  "PathPart": "bb",
                  "ChildResources": [
                    {
                      "PathPart": "bba"
                    },
                    {
                      "PathPart": "bbb"
                    },
                    {
                      "PathPart": "bbc"
                    }
                  ]
                },
                {
                  "PathPart": "bc",
                  "ChildResources": [
                    {
                      "PathPart": "bca"
                    },
                    {
                      "PathPart": "bcb"
                    },
                    {
                      "PathPart": "bcc"
                    }
                  ]
                }
              ]
            },
            {
              "PathPart": "c",
              "ChildResources": [
                {
                  "PathPart": "ca",
                  "ChildResources": [
                    {
                      "PathPart": "caa"
                    },
                    {
                      "PathPart": "cab"
                    },
                    {
                      "PathPart": "cac"
                    }
                  ]
                },
                {
                  "PathPart": "cb",
                  "ChildResources": [
                    {
                      "PathPart": "cba"
                    },
                    {
                      "PathPart": "cbb"
                    },
                    {
                      "PathPart": "cbc"
                    }
                  ]
                },
                {
                  "PathPart": "cc",
                  "ChildResources": [
                    {
                      "PathPart": "cca"
                    },
                    {
                      "PathPart": "ccb"
                    },
                    {
                      "PathPart": "ccc"
                    }
                  ]
                }
              ]
            }
          ]
        }
      }
    }
  },
  "Outputs": {
    "aConsoleLinkToLargeResourceTree": {
      "Description": "Link to the RestApi with a large tree created with CfnVariables",
      "Value": {
        "Fn::Join": [
          "",
          [
            "https://console.aws.amazon.com/apigateway/home?region=",
            {
              "Ref": "AWS::Region"
            },
            "#/restapis/",
            {
              "Ref": "MyRestApi"
            },
            "/resources/",
            {
              "Fn::GetAtt": [
                "MyRestApi",
                "RootResourceId"
              ]
            }
          ]
        ]
      }
    },
    "Variable": {
      "Description": "Value for base64(JSON.stringify(Variable))",
      "Value": {
        "Fn::GetAtt": [
          "MyVariable",
          "Value"
        ]
      }
    }
  }
}